Please use this identifier to cite or link to this item: https://doi.org/10.1002/smll.202004683
DC FieldValue
dc.titleEmergent Topological Hall Effect at a Charge-Transfer Interface
dc.contributor.authorLim, Zhi Shiuh
dc.contributor.authorLi, Changjian
dc.contributor.authorHuang, Zhen
dc.contributor.authorChi, Xiao
dc.contributor.authorZhou, Jun
dc.contributor.authorZeng, Shengwei
dc.contributor.authorOmar, Ganesh Ji
dc.contributor.authorFeng, Yuan Ping
dc.contributor.authorRusydi, Andrivo
dc.contributor.authorPennycook, Stephen John
dc.contributor.authorVenkatesan, Thirumalai
dc.contributor.authorAriando, Ariando
dc.date.accessioned2022-08-01T07:57:37Z
dc.date.available2022-08-01T07:57:37Z
dc.date.issued2020-11-16
dc.identifier.citationLim, Zhi Shiuh, Li, Changjian, Huang, Zhen, Chi, Xiao, Zhou, Jun, Zeng, Shengwei, Omar, Ganesh Ji, Feng, Yuan Ping, Rusydi, Andrivo, Pennycook, Stephen John, Venkatesan, Thirumalai, Ariando, Ariando (2020-11-16). Emergent Topological Hall Effect at a Charge-Transfer Interface. SMALL 16 (50). ScholarBank@NUS Repository. https://doi.org/10.1002/smll.202004683
dc.identifier.issn16136810
dc.identifier.issn16136829
dc.identifier.urihttps://scholarbank.nus.edu.sg/handle/10635/229661
dc.description.abstractExploring exotic interface magnetism due to charge transfer and strong spin-orbit coupling has profound application in the future development of spintronic memory. Here, the emergence and tuning of topological Hall effect (THE) from a CaMnO3/CaIrO3/CaMnO3 trilayer structure are studied in detail, which suggests the presence of magnetic Skyrmion-like bubbles. First, by tilting the magnetic field direction, the evolution of the Hall signal suggests a transformation of Skyrmions into topologically-trivial stripe domains, consistent with behaviors predicted by micromagnetic simulations. Second, by varying the thickness of CaMnO3, the optimal thicknesses for the THE signal emergence are found, which allow identification of the source of Dzyaloshinskii–Moriya interaction (DMI) and its competition with antiferromagnetic superexchange. Employing high-resolution transmission electron microscopy, randomly distributed stacking faults are identified only at the bottom interface and may avoid mutual cancellation of DMI. Last, a spin-transfer torque experiment also reveals a low threshold current density of ≈109 A m−2 for initiating the bubbles’ motion. This discovery sheds light on a possible strategy for integrating Skyrmions with antiferromagnetic spintronics.
dc.language.isoen
dc.publisherWILEY-V C H VERLAG GMBH
dc.sourceElements
dc.subjectScience & Technology
dc.subjectPhysical Sciences
dc.subjectTechnology
dc.subjectChemistry, Multidisciplinary
dc.subjectChemistry, Physical
dc.subjectNanoscience & Nanotechnology
dc.subjectMaterials Science, Multidisciplinary
dc.subjectPhysics, Applied
dc.subjectPhysics, Condensed Matter
dc.subjectChemistry
dc.subjectScience & Technology - Other Topics
dc.subjectMaterials Science
dc.subjectPhysics
dc.subjectCaIrO3
dc.subjectcharge transfer
dc.subjectSkyrmion&#8208
dc.subjectlike bubbles
dc.subjectspin&#8208
dc.subjectorbit coupling
dc.subjecttopological Hall effect
dc.subjectSYMMETRY-BREAKING
dc.subjectBERRY PHASE
dc.subjectSKYRMIONS
dc.subjectHETEROSTRUCTURES
dc.typeArticle
dc.date.updated2022-07-29T15:21:00Z
dc.contributor.departmentDEPT OF ELECTRICAL & COMPUTER ENGG
dc.contributor.departmentDEPT OF MATERIALS SCIENCE & ENGINEERING
dc.contributor.departmentDEPT OF PHYSICS
dc.contributor.departmentNUS NANOSCIENCE & NANOTECH INITIATIVE
dc.description.doi10.1002/smll.202004683
dc.description.sourcetitleSMALL
dc.description.volume16
dc.description.issue50
dc.published.statePublished
Appears in Collections:Staff Publications
Elements

Show simple item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
2006.02004v1.pdf3.19 MBAdobe PDF

OPEN

Post-printView/Download

SCOPUSTM   
Citations

3
checked on Nov 25, 2022

Page view(s)

37
checked on Nov 17, 2022

Download(s)

2
checked on Nov 17, 2022

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.